ANN ARBOR, Michigan — Michigan had an opportunity to find out how it measured up at home against two ranked teams in a five-day stretch.
The Wolverines did not get good news.
Bryn Forbes scored 23 of his 29 points in the first half, part of an early barrage of 3-pointers by No. 10 Michigan State in an 89-73 rout of rival Michigan on Saturday.
"These past two games, teams have just punked us," Zak Irvin said. "We can't let that happen."
The Wolverines (17-7, 7-4 Big Ten) lost their previous game to No. 22 Indiana by 13 points in another lopsided matchup that wasn't as close as the final score indicated.
"We just can't compete with those teams — the elite teams — with the state of our team right now," Michigan coach John Beilein said.
The Wolverines have been without Caris LeVert, their leading scorer, since Dec. 30 because of a lower leg injury.
"We're obviously a better team with Caris out there," Beilein said. "Today, I don't know if it makes a difference."
They also haven't had Spike Albrecht on the court since early December when he said his career at the school was over after trying to come back from hip surgery.
Forbes was sensational in the pivotal first half.
He made seven of the Spartans' 10 3-pointers in the half, and they finished 14 of 22 from beyond the arc. Long known for their rebounding and physicality, the Spartans (20-4, 7-4) have now made 47 3-pointers in their last three games. They beat Northwestern and Rutgers by a combined 65 points and the game against Michigan wasn't very competitive, either.
Irvin led the Wolverines with 19 points, and tried to inspire them to continue to compete during a timeout in the second half.
"The game wasn't going on our way, but I didn't want anybody to lay down and let them walk all over us," Irvin said.
Denzel Valentine had 21 points, nine rebounds and eight assists for the Spartans.
Michigan State coach Tom Izzo said Beilein is going through what the Spartans did earlier this season when Valentine was out of the lineup following knee surgery.
"He won't make an excuse," Izzo said. "I'll make one."
Forbes made his first five shots, all from 3-point range, as the Spartans raced out to a 32-15 lead. Michigan had problems at both ends, shooting only 8 of 28 from 3-point range for the game as Michigan State shut down guard Duncan Robinson.
Forbes added two more 3s in the final 45 seconds of the first half, and Michigan State took a 44-28 lead into the locker room. The Spartans built a bigger cushion in the second half before coasting to a 16-point win.
Michigan is now 1-6 against Top 25 teams, and the losses have generally been decisive. The Wolverines allowed the Hoosiers to score the final 25 points of the first half on Tuesday.
"It's like we got beat the same way twice," Irvin said. "This week has been really humbling for us."
Slowly, LeVert seems as if he is getting closer to be able to play.
"I'm not going to give out a timetable," Beilein said. "But he had a workout today for 30 straight minutes, all basketball stuff."
The Spartans have won four in a row over Michigan after losing six of the previous eight and winning 18 of 21 in a dominant stretch that started in 1998 and ended in 2010.
Michigan State: The Spartans made seven of their first eight shots from the field, five of which were from 3-point range. ... Forbes finished 10 of 13 from the field and 8 of 10 from long distance.
Michigan: It was Michigan's most lopsided home loss to the Spartans since Michigan State's 91-64 victory in 2001. .. Robinson was held to two points, and he didn't make a 3-pointer for the first time since the season opener against Northern Michigan. He's slipped to 47.7 percent from beyond the arc after going 2 of 13 over the past three games.
Michigan State plays at No. 18 Purdue on Tuesday night.
Michigan plays at Minnesota on Wednesday night.